QCI Principles and QCI Modification Impacti Analysis_20240705.pptx

Quality Class Indicators in mobile networks

1. Concept of QoS (Quality of Service) Create a guaranteed bit rate dedicated bearer with specific QCI, ARP, GBR and MBR parameter, wireless and core will ensure the service quality together. The QciPara.UlschPriorityFactor and QciPara.DlschPriorityFactor parameters specify the uplink and downlink scheduling priority weight factors for different QCIs. ARP: Priority of Allocation and Retention QCI: QoS Classification Identifier GBR: Guaranteed Bit Rate MBR: Max Bit Rate AMBR: Aggregate Maximum Bit Rate QCI Resource Type Priority Level Packet Delay Budget Packet Error Loss Rate Example Service 1 GBR 2 100ms 10 -2 Conversational Voice 2 GBR 4 150ms 10 -3 Conversational Video 3 GBR 3 50ms 10 -3 Real Time Gaming 4 GBR 5 300ms 10 -6 Streaming (non-conv. video) 5 non-GBR 1 100ms 10 -6 IMS Signalling 6 non-GBR 6 300ms 10 -6 Video (Buffered Streaming); TCP-based (e.g. www, e-mail, chat, ftp, p2p file sharing, progressive video, etc.) 7 non-GBR 7 100ms 10 -3 Voice, Video (Live Streaming), interactive Gaming 8 non-GBR 8 300ms 10 -6 Video (Buffered Streaming); TCP-based (e.g. www, e-mail, chat, ftp, p2p file sharing, progressive video, etc.) 9 non-GBR 9 QCI … User1 User2 Weight 1000 Weight 100 1X 10X 6 9 QCI QCI Downlink Scheduling Priority Factor Uplink Scheduling Priority Factor 6 1 000 1 000 9 100 100

2. Impact of QCI Adjustment on Resource Scheduling/Occupation Assume that the QCI of 0.35M LVC users is changed from QCI9 to QCI6 . Based on the scheduling weight, the resource Scheduling/Occupation is as follows: LTE User 2.7 M QCI9 Normal User ： 2.35M QCI9 LVC ： 0.35M LVC Resource Scheduling(%): 0.35M/2.7M= 13% QCI9 Normal User ： 2.35M QCI6 LVC ： 0.35M LVC Resource Scheduling(%): ( 0.35M*10 )/( 2.35M+0.35M*10 )= 60% Indicator Before QCI Modification After QCI Modification Change Rate LVC Resource Occupation Ratio 13% 60% 362% Av g Single LVC Resource Occupation 1 4.6 362% Avg Single Normal User Resource Occupation 1 0.5 -54% Note : LTE user data is obtained from CEM data in June. Normalize the resource occupation before the adjustment and set the value to 1 . Assume that users are evenly distributed and perform average calculation. QCI Modification